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openSUSE libxml2 Important Denial Service Buffer Overflow Vuln 2026-21317-1

opensuse
Calendar Grey July 15, 2026
Dist Opensuse Esm H88
This openSUSE security update addresses important issues in libxml2, fixing vulnerabilities and bugs that could compromise system stability.
An update that solves 2 vulnerabilities and has 2 bug fixes can now be installed.

Description

This update for libxml2 fixes the following issues

- CVE-2026-6732: crafted XSD-validated document can cause a denial of service (bsc#1262719).

- CVE-2026-11979: stack-based buffer overflows in the `xmlcatalog` utility when running in `--shell` mode (bsc#1269790).

Patch instructions:

To install this openSUSE security update use the suse recommended installation methods

like YaST online_update or "zypper patch".

Alternatively you can run the command listed for your product:

- openSUSE Leap 16.0

zypper in -t patch openSUSE-Leap-16.0-1220=1

Topics%20covered

Topics Covered

security advisory denial of service important libxml2 OpenSUSE stack buffer overflow

Patch

Package List

- openSUSE Leap 16.0:

libxml2-2-2.13.8-160000.5.1

libxml2-devel-2.13.8-160000.5.1

libxml2-doc-2.13.8-160000.5.1

libxml2-tools-2.13.8-160000.5.1

python313-libxml2-2.13.8-160000.5.1

References

* bsc#1262719

* bsc#1269790

References:

* https://www.suse.com/security/cve/CVE-2026-11979.html

* https://www.suse.com/security/cve/CVE-2026-6732.html

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: openSUSE-SU-2026:21317-1
Rating: important
Affected Products: openSUSE Leap 16.0 -------------------------------------------------------------

Topics%20covered

Topics Covered

security advisory denial of service important libxml2 OpenSUSE stack buffer overflow

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